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[cobuccit]

lcdout $FE, $C0," TEmpe", temperature

what does this line display the temperature value as ?

ASCII code, one strange character, and it changes every time the temperature changes

[richard]

ASCII code, one strange character, and it changes every time the temperature changes

lcdout $FE, $C0," TEmpe", dec temperature


removing all the unused/unecessary stuff " just noise" , using a proper config and displaying a result more in keeping with lm35 accuracy

this works just fine

'****************************************************************'*  '*  Name    : 16F88_LM235.BAS                                   *
'*  Author  :                                    *
'*  Notice  : Copyright (c) 2020                                *
'*          : All Rights Reserved                               *
'*  Date    : 04/04/2020                                        *
'*  Version : 1.0                                               *
'*  
'****************************************************************
#CONFIG
  __config  _CONFIG1, _INTRC_IO & _WDT_ON & _PWRTE_OFF & _MCLR_ON & _BODEN_ON & _LVP_OFF & _CPD_OFF & _WRT_PROTECT_OFF & _DEBUG_OFF & _CCP1_RB0 & _CP_OFF
  __config  _CONFIG2, _FCMEN_ON & _IESO_ON
#ENDCONFIG
'PIC 16F88
'    Hardware Assignments
'    --------------------
' LCD circuitery
'01     - Vss (GND)
'02     - Vdd (+5V)
'08 RS  - PORTB.2
'09 E   - PORTB.3
'10 DB4 - PORTB.4
'11 DB5 - PORTB.5
'12 DB6 - PORTB.6
'13 DB7 - PORTB.7


adcon1.7=1
ANSEL = %000001 'Disable Inputs Tranne AN0
OSCCON = %01100000 'Internal RC set to 4MHZ
TRISA = %10111111 ' impostazioni INP/OUT
TRISB = 0 ' delle porte
'----------------------------------------------------
DEFINE LCD_DREG PORTB       'Porta B DATA OUT 
DEFINE LCD_DBIT 4           '0 --> Bit 0-3 : 4 --> Bit 4-7 
DEFINE LCD_RSREG PORTB      'LCD register select port - Porta B --> RS
DEFINE LCD_RSBIT 2          'LCD register select bit  - Pin RS B2
DEFINE LCD_EREG PORTB       'LCD enable port - Porta B --> EN
DEFINE LCD_EBIT 3           'LCD enable bit - Pin EN B3DEFINE LCD_BITS 4           'LCD bus size 4 or 8 
DEFINE LCD_LINES 2          'Number lines on LCD DEFINE LCD_COMMANDUS 2000   'Command delay time in us 
DEFINE LCD_DATAUS 50        'Data delay time in us


'    EEPROM Locations Codice ASCII es. a=97 b=98 c=99 ...


'===========================================================================
'*****  SETTAGGIO PORTE 


Rele   VAR    PORTA.6     '                  Pin 15
'--------------------------------------------------------------
'---------Define ADCin Parameters   
DEFINE ADC_BITS 10      'set number of bits in result
DEFINE ADC_CLOCK 3      'set clock source (3=rc)
DEFINE ADC_SAMPLEUS 50  'Set sampling time in uS


'    RAM Assignments and Variables
'=========================================================================== 
temp var word
temperature var word
samples var word
sample VAR BYTE
quanta con 1250
Tmax VAR byte
Tmin VAR byte
'===========================================================================
Tmin=16
Tmax=30
 
START:
Lcdout $FE, 1           'Clear screen
rele=0


main:   
samples=0
FOR sample = 1 TO 20 'Take 20 samples
ADCIN 0, temp 'Read AN0 into temp variable
samples = samples + temp
PAUSE 40 ' Wait 1/4 seconds per reading
NEXT sample
temp = samples/20 'Average over 20 samples (Every 5 seconds)
temperature= temp */ quanta


LCDOUT $FE, 1 ' cancella LCD
LCDOUT $FE, 2 ' ritorna al primo carattere
lcdout $FE, 2, "Temp ",dec2 (temperature/10),".", dec1 (temperature//10),$DF,"C"
lcdout $FE, $C0," TEmpe", dec temperature 
      
If temperature > (Tmax*10) then
rele=1
else
rele=0
Endif
                                
goto main